Lock.



J. FORSHEIM & J. KONIGSBERG."

LOCK.

APPLICATION FILED MAY 8. I914.

PatentedSept. 14, 1915.

.. WASHINGTON D c trio.

JOSEPH FORSHEIM, OF GREAT NECK, AND JOSEPH KONIGSBERG, OF NEW YORK, N. Y.

LOCK.

Original application filed January 20, 1914, Serial No. 813,237.

provement in Locks, of which the following is a specification.

One ob ect of our lnvention 18 to provide an indicator for showing the number of times that a lock has been released, said indicator being rendered automatlcally 11101)- 1 erable when the lock has been operated a predetermined number of times; it being necessary to manually reset the indicator before it will again be brought into its operative connection with the look.

A further object is to provide a separate locked compartment for the indicator, said compartment requiring a diflerent key for opening the same to gain access to the indicator for purposes of resetting the indicator.

This invention is shown and will be described in connection with a padlock of well known and approved form, it being understood that the invention is applicable in con nection with locks of various kinds.

A practical embodiment of our invention is represented in the accompanying drawings, in which Figure 1 is a front view of a padlock towhich our invention is applied, Fig. 2 is a 1 side view of the same, Fig. 3.is a section from front to rear, taken in the plane of the line AA of Fig. 1, looking in the direction of the arrows, Fig. 4 is a back view of the lock. Fig. 5 is a section taken in the plane of the line BB of Fig. 2, looking in the direction of the arrows, the shackle being shown in full lines in its open position and in dotted lines in its closed position. Fig. 6 is a section taken in the plane of the line CC of Fig. 2, looking in the direction of the arrows, the parts being inthe positions which they assume when the shackle is closed, Fig. 7 is a similar view with the parts in the position which they assume when the shackle is open, Fig. 8 is a similar view showing the parts in the position which they assume when the shackle is closed and when the indicator has been moved to its inoperative position. Fig. 9 is a detail section taken in the same plane with the indi Specification of Letters Patent.

Patented Sept. 14, 1915.

Divided and this application filed May 8,

Serial No. 337,239.

cator and parts of its operating mechanism removed, a key being shown in section in p'osltion to release the casing for the indicator. Fig. 10 is a section taken in the plane of the line DD of Fig. 2, looking in the direction of the arrows, showing the device for recording the fact that a key has been inserted for removing the indicator inclosing casing member, and Fig. 11 is a view of a type of key which is shaped to release the indicator inclosing member and also adapted for use in resetting the indicator.

The padlock shackle 1 is pivoted at 2 within the casing which comprises the front and back members 3 and 1 which form between them a compartment for the usual tumbler controlled locking member including the tumblers 5, shackle catch 6, and spring 7, the branches of which act upon the shackle and the tumblers. The front casing member 3 has a key-hole 8 and a hinge keeper 9 therefor.

The back member 1 is provided with the posts 10, to which the front member is riveted, and also with the pipe key pintle 11 arranged to position the key with respect to the tumblers. I

The shackle 1 is provided at its hinged end with a lug 12 engaged by the tumblers, which lug also controls the operation of the indicator as the shackle is opened and closed, as will hereinafter more fully appear.

A removable casing member 13, corre sponding in shape to the casing members 3 and 1, is locked to the back casing member 1 of the padlock and together with the adjacent wall of the member 4: forms a compartment for inclosing the indicator and therecording device which will be described later. This casing member 13 is locked to the casing member 4, in'the present instance by providing the casing member 13 with a hinge piece 14, at one side thereof, and a hook 16 at the other side thereof.

The hinge piece 1 1 interlocks with a slot 15 in the adjacent wall of the casing member 41 and the hook 16 projects through a hole 17 in said adjacent wall into the tumbler compartment where it is engaged and released by a lug 18 which projects through a slot 19 in said wall, from a rocking plate 20 pivoted in the indicator compartment on a pin 21 which forms a rearward extension of the pipe key pintle 11. This casing member 13 is provided with a key-hole 22 through which a key 23 may be inserted for rocking the plate 20 by engagement with an extension 24 thereof, to move the lug 18 out of its locking engagement with the hook 16 for permitting the casing member 13 to be removed for gaining access to the indicator and recording device.

The indicator comprises a ratchet wheel 25 mounted to rotate on the pin 21, the teeth of which ratchet wheel are denoted by 26. This ratchet wheel bears on its face an annular series of marks such as numerals 27 arranged in consecutive order and corresponding in number to the number of teeth 26.

The casing member 13 is provided with a window 28 through which the marks 27 on the indicator wheel are exposed one at a time.

The ratchet actuating pawl is denoted by 29 and the retaining pawl by 30.

The actuating pawl 29 is provided with an extension 31 which rests upon the edge of the rocking plate 20, for limiting the inward movement of the said pawl. This pawl has a sliding interlocked engagement with the adjacent wall of the back member 4 through a slot 32. ed upon the extension 21 of the rocking plate 20. p

A coil spring 33, connecting the arm 31 of the pawl 29 with the arm 35 of the pawl 30, serves the three-fold purpose of tending to hold the pawl 29 at the limit of its inward movement, the pawl 30 at the limit of its inward movemnt, and the rocking plate 20 at the limit of its rearward movement.

The ear 36 of the actuating pawl 29 which is located within the tumbler compartment is arranged in position to be engaged by the lug 12 at the hinged end of the hasp for moving the actuating pawl against the tension of the spring 33 to the limit of its outward movement when the shackle is closed. The parts are so arranged that the movement of the actuating pawl 29 is slightly greater than the length'of a tooth on the indicator wheel.

An oliset extension 37 of the retaining pawl 30 serves to keep the teeth of the pawl in the plane of the indicator wheel. The extension 31 of the actuating pawl 29 also serves to keep the tooth of the pawl in its proper relationship with respect to the teeth of the indicator wheel.

One of the teeth 26 on the periphery of the indicator wheel is removed so that when this blank comes opposite the tooth of the actuating pawl 29, the pawl is rendered inoperative to rotate the wheel.

For convenience in resetting the wheel to bring it into its operative relationship with respect to the actuating; pawl 29, the plate 20 is provided with a stop 38 and the wheel 25 is provided with a hole 39 for the insertion of the pin 40 on the key 23; For

The retaining pawl 30 is mountinstance, in resetting the disk with the parts in the position shown in Fig. 6, with the numeral 13 opposite the arrow, the pin 10 of the key 23 will be inserted through the hole 39 and the wheel rotated until the pin 10 is arrested by the stop 38. This will bring the zero point opposite the arrow and also oppositethe window 28 in the casing member 13.

Similarly with the wheel in the position shown in Fig. 8, the pin 40 of the key 23 may be inserted through the hole 39 and the wheel moved one tooth to bring the zero opposite the arrow and the window 28, thus moving the wheel from its inoperative to its operative position with respect to its actuating pawl 29.

We will now proceed to describe a practical embodiment of our device for recording the fact of the insertion of a key or other instrument through the keyhole 22. A disk 41, of paper or other suitable material,

is rotatively mounted upon a stud projecting inwardly from the wall of the casing member13, the position ofthe stud 42 and the shape of the recording disk 11 being such that the window 28 in the casing member 13 will not be covered by the disk 41. This disk -11 is preferably located in a shallow pocket 13 and a guard 11 projects over the disk opposite the key-hole 22, which guard is provided with a key-hole 15 in alinement with the key-hole 22 so that the disk is held in position to be readily punctured when a key or other instrument is inserted through the key-holes 22 and it. A recessLG may be provided in the adjacent wall of the casing member 11 01 receiving the inner end of the key to hold the same in proper position for moving the rocking plate 20 into position to release the hook 16 of the casing member 13. This disk 4:1 may be privately marked, as shown at 417, so as to prevent the unwarranted substitution of another disk in place thereof. This disk 41 is held against movement by engagement with the end of the pin 21, a recess 18 being formed in the shallow pocket 1.3 for receiving the end of said pin 21 when the casing member 13 is locked to the casing member 4.

A nut 49 has a screw threaded engagement with the pin 21 for holding the inclicator wheel 25 and rocking plate 20 in position thereon.

To prevent the indicator wheel from being advanced beyond its inoperable position by the introduction of an implement through the window 28 into engagement with the face of the wheel, we provide the wheel with a pin 50 which will engage the window frame 51, of the window 28 when the indicator wheel reaches its inoperable position. The wheel is then looked against further rotary movement until the casing member 13 is removed. After the indicator wheel has been reset and the casing member 13 locked inits position, the pin 50 may pass through a slot 52 in the window frame 51 as the look and indicator are operated.

In operation, presupposing the parts to be in the position shown in Fig. 8, the key 23 is inserted through the key-hole 22 and the rocking plate 20 is moved into position to release the hook 16 as shown in Fig. 9. The casing member 13 may then be removed by a swinging movement. The pin 40 may then be inserted through the hole 39 and the indicator wheel 25 moved one tooth to bring the actuating pawl 29 and wheel into operative relationship. This will also bring the zero mark into position to be exposed through the window 28. The recording disk 1-1 is then moved to bring an unperforated surface opposite the key-hole 22 or a new disk may be inserted if desired. The casing member 13 is then looked in its position. Thereafter every time that the padlock is released up to a predetermined number of times, in the present instance thirty-one times, the indicator wheel is moved by the actuating pawl 29 to visually indicate through the window 28 the number of times which the padlock has been opened. At the same time, access to the indicator wheel and its actuating parts can only be obtained by removing the casing member 13 and this can only be removed by insertion of a proper key. Should a key or other instrument be inserted through the keyhole 22, the disk 41 will automatically record the fact.

The coincidence of the actuating pawl 29 with the blank portion of the toothed periphery of the wheel 25 and the engagement of the pin 50 with the window frame 51, prevents the indicator wheel from being moved past the numeral 31 without unlocking and removing the casing member 18 and manually resetting the indicator wheel with re spect to its actuating pawl.

It is obvious that the casing member 13 may be either partly or entirely removed from the casing member 4 when unlocked for gaining access to the indicator and protective device.

The parts relating to the recording device shown and described but not claimed herein, form the subject-matter of our original application for looks, filed January 20, 1914, Serial N 0. 813237, of which this application is a division.

It is evident that various changes may be resorted to in the construction, form and arrangement of the several parts, it being understood that we have illustrated our invention in connection with a padlock of the character illustrated herein purely for the purposes of giving a clear understanding of the operation of our invention, and it is therefore obvious that we do not wish to limit ourselves to the construction herein shown and described, but

What we claim is:

1. A look, a housed indicator actuated thereby and rendered, by its structure, inoperable when the lock has been operated a predetermined number of times, and lock controlled means for gaining access to the indicator to render it again operable.

2. A look, a casing, an indicator therein actuated by the lock to visually indicate the number of times the lock has been operated, said indicator being, by its structure, rendered inoperable when it has been operated a predetermined number of times, and means for locking the indicator to the casing when it has become inoperable to prevent it from being turned from outside the casing.

8. A look, a casing, an indicator actuated by the lock to visually indicate the number of times the lock has been operated, the said indicator being, by its structure, rendered inoperable when it has been operated a predetermined number of times, a lock controlled removable member and means within said removable member for locking the indicator thereto when it has become inoperable.

4:. In a look, a casing, a removable lock controlled casing member, a rock ng plate within the casing arranged to be moved to release the casing member, an indicator ratchet wheel, a retaining pawl mounted on said rocking plate, an actuating pawl and a spring common to the said pawls and plate for holding the two pawls and rocking plate at the limits of their respective movements in one direction.

5. In a look, a locking mechanism, a perforated indicator wheel actuated thereby and, by its structure, rendered inoperable when the locking mechanism has been operated a predetermined number of times and means for setting the indicator wheel in op erable position comprising a stop and a pin arranged to enter a perforation in the indicator wheel and engage the said stop when the wheel has been turned to its operable position.

In testimony, that we claim the foregoing as our invention, we have signed our names in presence of two witnesses, this twentieth day of April 1914:.

JOSEPH FORSHEIM. JOSEPH KONIGSBERG.

lVitnesses:

F: GEORGE BARRY, LIDA M. EGBERT.

Gopies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, I). G. 

